package net.zjitc.controller;

import lombok.extern.slf4j.Slf4j;
import net.zjitc.common.R;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.UUID;

@Slf4j
@RestController
@RequestMapping("/common")
public class CommonController {
     String basePath = System.getProperty("user.dir") + "/src/main/resources/img/";
//    @Value("${reggie.path}")
//    private String basePath;
    @PostMapping("/upload")
    public R<String> upload(MultipartFile file){
        log.info(file.toString());
        String originalFileName=file.getOriginalFilename();
        String suffix=originalFileName.substring(originalFileName.lastIndexOf("."));
        String fileName= UUID.randomUUID().toString()+suffix;
        File dir = new File(basePath);
        if(!dir.exists()){
            dir.mkdirs();
        }
        try {
            file.transferTo(new File(basePath+fileName));
        }catch (IOException e){
            e.printStackTrace();
        }
        return R.success(fileName);
    }
    @GetMapping("/download")
    public void download(String name, HttpServletResponse response){
        try {
            FileInputStream stream = new FileInputStream(new File(basePath+name));
            ServletOutputStream outputStream = response.getOutputStream();
            String s=name.split("\\.")[1];
            response.setContentType("image/"+s);
            int len=0;
            byte[] bytes=new byte[1024];
            while ((len = stream.read(bytes)) != -1){
                outputStream.write(bytes,0,len);
                outputStream.flush();
            }
            outputStream.close();
            stream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
